I'm fairly sure E46 CSL's and S2000's were under production at the same time. And something tells me the CSL would wipe the floor with the S2000 in the corners and on the straights... but that's just my opinion.

Don't even need to bring the almighty CSL into the discussion, the lower performance ZCP (comp pkg) that was produced during the S2000 years and available in the US ran the slalom cones at 73.4 mph while the s2000 could only manage 71.7 mph.